How about this for the season finale:  Carrie figures out Quinn is hunting Brody just as Quinn is closing in.  Quinn hesitates for a moment as he reflects on killing Carrie's love, and Carrie uses that opening to kill Quinn.  Then Brody kills Carrie, for reasons that are not revealed until next season.

How about this for the season finale:  Carrie figures out Quinn is hunting Brody just as Quinn is closing in.  Quinn hesitates for a moment as he reflects on killing Carrie's love, and Carrie uses that opening to kill Quinn.  Then Brody kills Carrie, for reasons that are not revealed until next season.